Toyota Alphard Power Door Problem?

One common problem most often reported by Toyota Alphard owner is that the power sliding door stops responding to the buttons that “tell” it to open, or that pulling the handle outward the door doesn’t slide electrically.

The step to investigate this problem involves the following sequences.

If you are handy in troubleshooting yourself, first check the fuse then check if there is power at the motor when the buttons are operated, then check for power at the buttons, then for power at the fuse. Look closely at the wires at and near the motor and the button and as far as you can follow them, look for obvious problems, loose connections, look for frays where the wires take a bend or go through a hole or are near anything moving. The problem can have many possible causes such as a poor ground, loose connection, frayed wire, bad switch, blown fuse, faulty relay, blown motor, or possibly even a problem with the mechanical aspect that opens the door.

Phew, that's a mouthful.

Well that's the steps the service personnel would have to go through. We mortal just operating the doors probably don't even know how to start.

If you do not want to handle the thorough investigation stated above, then try a reset. The power sliding door can be reset simply by disconnecting the battery, reconnect the terminal (which reset the power door), turn on the power door button and press the open/close button. If this does not fix the problem then you have to look at other area like door’s motor, cable etc. A worn battery might not deliver enough power to the driving motor so you might want to check the condition of the battery when you have a power door problem. At the minimum change to a 60Amp or higher battery, if you have other equipment like ICE that drain you battery.

If all else fail, please check with your mechanic :)